NOTE: A Line Flush should be done prior to rebuilding the Injector Valve.
It is not necessary to remove the Mix Manifold assembly. It is removed in photo Figs below for illustration purposes only.
Remove Cup Holder with a 3/16 hex wrench to remove ¼-28x½” SHCS.
Fig 1
Remove the Solvent Dump Valve with a 9/16 wrench.
Fig 2
Remove the Catalyst/Check Valve Hose assembly with a 9/16 wrench.
Fig 3
Inspect the Injector Hose and Check Valve for any obstructions. Clean solvent (not water) or air can be used for testing. Make sure the Check Valve does not leak when back flow pressurized. If the check valve does not seal, take it apart and clean out the contaminants, reassemble, and retest.
NOTE 1:
When reinstalling the Check Valve, make sure the flow arrow is pointing towards the injector valve.
NOTE 2:
If the Hose is plugged with cured catalyst, also check the Manifold Block, Fittings, and Ratio Check Valve for obstructions.
Remove the Injector Valve from the Mix Head using a 5/32 hex wrench
(special short wrench supplied with the Seal Kit) to remove 4 x 10-24 x 3” SHCS.
Fig 4
Remove the Seal Gland.
Fig 5
Remove the Inlet Block.
Fig 6
Remove the black anodized Air Cap from the Valve Body.
Fig 7
Remove the Spool/Piston assembly from the Valve Body.
Fig 8
Remove and replace the Piston U-Cup - Kit item 4. U-Cup must be installed with the
open cup facing away from the spool.
Fig 9
Remove and replace the white and black Spool O-rings – Kit items 8 &10.
Fig 10
Remove and replace the Valve Body red O-ring – Kit item 14.
Fig 11
Remove and replace the Valve Body Lip Seal – Kit item 15.
Fig 12
Remove and replace the Air Cap Gasket and O-ring – Kit items 3 & 21. (Air Cap Gasket & O-ring might not need replacing, use discretion)
Fig 13
Remove and replace the Seal Gland O-Rings and Lip Seals
Kit Items 14 &15. Note: Make sure the Lip Seals are installed with the spring cup facing up.
Fig 14
Apply air tool oil to the Spool/Piston assembly and inside the air cylinder bore of the
Valve Body. Install the Spool/Piston assembly into the Valve Body until the U-Cup
Piston is inside the air cylinder.
Fig 15
Install the Black Air Cap to the Valve Body and tighten by hand.
Fig 16
Install the Inlet Block to the Valve Body. Note: Make sure the Oil Cup is vertical (perpendicular) between the Inlet Block ports.
Fig 17
Install the Seal Gland to the Valve Body. Fig 18 Note: Make sure the raised shoulder on the Seal Gland engages the counter bore
in the Inlet Block.
Fig 18
Install the assembled Injector Valve onto the Mix Head using 4ea. 10-24 x 3”SHCS.
Note: The Oil Cup should be vertical and Air Connector on the left side as illustrated.
Fig 19
Install the Solvent Dump Valve with 9/16 wrench.
Fig 20
Install the Catalyst/Check Valve Hose assembly with 9/16 wrench.
